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Non-dimmable LED Driver
Questions of LED lights and led driver in project Oct 08, 2021

*Why can't the lamp cup (tungsten wire) of the same power be lit with the same 110v dc led driver?

When the lamp cup is in the cold state, its resistance is very small, that is, when the rated voltage is applied to the lamp cup, a large starting current is required immediately before lighting. When the lamp cup is lit, the temperature rises, the resistance value increases sharply, and the current drops to the normal working current of the lamp cup. Because our products have a current-limiting protection function, that is, the protection function will appear when the actual current exceeds the rated output current. Therefore, the instantaneous current before the lamp cup is lighted exceeds the rated current of the slim led driver for 100w and the output power of the lamp cup power before the power supply is dynamically lit, so that the constant voltage 100w 24v led driver is in a protected state and the lamp cup cannot be lighted.

 


 

 

*Why can't the first group of LEDs be completely turned off when the second group of LEDs are on when the scan controller controls the input part of the 100w 12v led driver?

Although the scan controller has disconnected the input voltage of the led driver led 200w, because the electrolytic capacitor inside the 12v dimmable led driver has a discharge process, it will maintain the entire power supply to continue working for a period of time, and the LED lamp group connected to the power supply will be delayed for a period of time. It can be completely extinguished, so after the second group of LEDs are on, the first group of LEDs cannot be extinguished.


When doing LED projects, the scanning controller must control the output of the waterproof 100w led driver and the input circuit of each LED lamp group, so that the waterproof 100w led driver will not affect the LED roof group. The various light groups can be synchronized during the scanning process.


*Why does the LED light still have a weak afterglow after the mains is turned off?

Since the switch in the distribution box controls the neutral line, when the neutral line is turned off, the live line current will actually pass through the red 220v dc led driver to form this induction loop, so that the output part of the power supply has a weak voltage to power the LED, so it appears weak.


During installation, it is necessary to control the neutral wire and live wire switch of the mains power supply at the same time. If there is no condition, the live wire switch of the mains power supply must be controlled.


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